B79-08

(reaffirmed 2018)

Commercial and residential drains and cleanouts

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Standards Update Service

B79-08

November 2008

Title: Commercial and residential drains and cleanouts

Pagination: 32 pages (vii preliminary and 25 text), each dated November 2008

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CSA Standard

B79-08

Commercial and residential drains and cleanouts

Published in November 2008 by Canadian Standards Association A not-for-profit private sector organization

5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 • 416-747-4044

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ISBN 978-1-55436-755-9

Technical Editor: Abraham I. Murra

© Canadian Standards Association — 2008

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

© Canadian Standards Association Commercial and residential drains and cleanouts

Contents

Technical Committee on Drains and Interceptors v

Preface vii

1. Scope 1

   
   

2. Reference publications 2

   
   

3. Definitions 4

   
   

4. Materials 4

   1. General 4

   2. Cast iron 5

   3. Ductile iron 5

   4. Bronze 5

   5. Nickel bronze 5

   6. Aluminum 5

   7. Plastics 5

   8. Stainless steel 6

   9. Elastomers 6

   10. Adhesives 6

   11. Finishes 6

       1. General 6

       2. Non-organic finishes 6

       3. Organic finishes 6

   12. Plastic siphonic roof drains 6

       
       

5. Design requirements 6

   1. Connections 6

      1. Outlet locations 6

      2. Connection types 7

      3. Solvent-cemented outlet connections 7

      4. O-ring or gasketed joints 7

      5. Cross-sectional area 7

   2. Fasteners 7

   3. Grates and cleanout covers 7

   4. Hinged grates 8

   5. Shower drain grates 8

   6. Backwater valves integral to drains 8

      1. Sealing elements 8

      2. Protrusions 8

      3. Operation 8

      4. Watertightness 9

   7. Drain integral traps 9

   8. Leakage 9

   9. Seepage openings 9

   10. Plastic siphonic roof drains 9

       
       

6. Test methods and performance requirements 10

   1. Loading test for grates, cleanout covers, and top rims 10

      1. Load classifications 10

         
         

         November 2008 iii

         B79-08 © Canadian Standards Association

         
         

         
         

      2. Test equipment 10

      3. Test method 10

      4. Pass/fail criteria 10

      5. Calculation of maximum safe live load 10

   2. Watertightness test for backwater valves 11

      1. Set-up 11

      2. Test method 11

      3. Pass/fail criteria 11

   3. Sealing test for cleanout covers 11

      1. Test method 11

      2. Pass/fail criteria 12

   4. Joint seal test 12

      1. Test method 12

      2. Pass/fail criteria 12

   5. Corrosion test 12

      1. General 12

      2. Test method 12

      3. Pass/fail criteria 12

   6. Prefabricated vertical geocomposite drains 12

      
      

7. Markings 12

   1. Residential drains 12

   2. Commercial drains 13

   3. Elastomeric components 13

Annexes

A (informative) — Prefabricated vertical geocomposite drains and plastic siphonic roof drains 25

Tables

1. — Threaded connections 14

2. — Inside caulk connections 15

3. — Hub (outside caulk) connections 16

4. — Spigot (mechanical hub or no hub) connections 17

Figures

1. — Drain nomenclature 18

2. — Bottom outlets 20

3. — Side outlets 21

4. — Angled side or bottom outlet 22

5. — Set-up for watertightness test for backwater valves 23

6. — Canted backwater valve 24

iv November 2008

© Canadian Standards Association Commercial and residential drains and cleanouts

Technical Committee on Drains and Interceptors

R. Guinn Canplas Industries Ltd., Barrie, Ontario

Chair

P. Paré Watts Industries (Canada) Inc., Burlington, Ontario

Vice-Chair

1. Ackroyd Rand Technical Consulting, LLC, Rye, New Hampshire, USA

   Representing the Plumbing and Drainage Institute

   
   

2. Aridi NSF International,

Ann Arbor, Michigan, USA

Associate

P. Ashton Masco Canada Limited, Mississauga, Ontario

C. Buehler Organic Resource Management,

Woodbridge, Ontario

C. Caruana CSA International, Toronto, Ontario

Associate

T.D. Ellison Canadian Water and Wastewater Association,

Ottawa, Ontario

Associate

G. Emberson Contour Industries Inc., Toronto, Ontario

E.J. Forty HR Wallingford Ltd., Oxon, United Kingdom

Associate

M. Gordon Region of Waterloo, Cambridge, Ontario

G. Hale Town of Markham, Markham, Ontario

G.W. Harrison Wayne Harrison Consulting,

Edmond, Oklahoma, USA

K.S. Hui Ontario Ministry of Municipal Affairs and Housing, Toronto, Ontario

Associate

E.C. Jowett Waterloo Biofilter Systems Inc., Rockwood, Ontario

B. Lagueux Saint-Nicolas, Québec

Consumer representative

November 2008 v

B79-08 © Canadian Standards Association

C.M. Matthews City of Toronto, Toronto, Ontario

D. Millar City of Hamilton, Hamilton, Ontario

M. Mullen City of Brantford, Brantford, Ontario

D. Oliveira Town of Markham, Markham, Ontario

Associate

P. Power City of Calgary, Calgary, Alberta

W. Smith Jay R. Smith Mfg. Co., Montgomery, Alabama, USA

Associate

M. Snyder Specca Services, Barrie, Ontario

C. Tevis Lowe Engineering/Highland Tank, Marlton, New Jersey, USA

Associate

P. Tov Green Turtle Technologies Ltd., Mississauga, Ontario

Associate

J. Walker Green Turtle Technologies Ltd., Mississauga, Ontario

M. Weiss Weiss Research, Polson, Montana, USA

Representing Jay R. Smith Mfg. Co.

W.C. Whitehead Whitehead Consulting Services,

Danvers, Massachusetts, USA

Associate

A.I. Murra Canadian Standards Association, Mississauga, Ontario

Project Manager

vi November 2008

© Canadian Standards Association Commercial and residential drains and cleanouts

Preface

This is the fourth edition of CSA B79, Commercial and residential drains and cleanouts. It supersedes the previous editions, published in 2005 under the title Floor drains, area drains, shower drains, and cleanouts in residential construction, and in 1994 and 1979.

This edition includes new requirements for

1. floor and trench drains for commercial use;

2. roof, deck, and balcony drains for commercial use;

3. siphonic roof drains for commercial use;

4. vacuum and storm drains for commercial use; and

5. cleanouts for commercial use.

   This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

   This Standard was prepared by the Technical Committee on Drains and Interceptors, under the jurisdiction of the Strategic Steering Committee on Water Management Products, Materials, and Systems, and has been formally approved by the Technical Committee. It will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.

   
   

   November 2008

   
   

   Notes:

   1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

   2. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

   3. This publication was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.

   4. CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

   5. All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.

      Requests for interpretation should

      1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

      2. provide an explanation of circumstances surrounding the actual field condition; and

      3. be phrased where possible to permit a specific “yes” or “no” answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA’s periodical Info Update, which is available on the CSA Web site at www.csa.ca.

November 2008 vii

© Canadian Standards Association Commercial and residential drains and cleanouts

B79-08

Commercial and residential drains and cleanouts

1 Scope

1.1

This Standard specifies requirements for commercial and residential

1. area drains;

2. balcony drains;

3. deck drains;

4. floor drains;

5. roof drains;

6. shower drains;

7. trench drains; and

8. cleanouts.

1.2

This Standard covers the following subjects:

1. materials;

2. design requirements for

   1. connections;

   2. fasteners;

   3. grates;

   4. cleanout covers;

   5. backwater valves; and

   6. integral traps;

3. tests for

   1. loading;

   2. backwater valve tightness;

   3. sealing; and

   4. corrosion; and

4. markings.

1.3

The figures included in this Standard are intended only to portray typical drain types and are not intended to restrict design or to be used for specification purposes.

1.4

In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

November 2008 1